关键词: 稻鸭共作, 农药, 产量, 生态效益, 经济效益

Abstract: In order to make the ecological and economic benefits of “rice-duck farming” in ecological farm more clearly, and provide theoretical and technical support for improving the “rice-duck farming” technique and its application in ecological farm, this paper analyzed ecological benefit of “rice-duck farming” according to previous studies, and carried out a research according to actual production in an ecological farm, all of the inputs including pesticides, fertilizers, labors and the costs for management were comprehensively analyzed in “rice-duck farming” system and conventional rice cultivation process. The prospect of “rice-duck farming” production in ecological farm was also been analyzed. The results showed that: a lot of organic fertilizers, labors and biological pesticides were invested in the early time in “rice-duck farming” system, and the effective panicle number of rice was less, which led to the yield of rice decreased, eventually resulted in the price of rice reaching 8.20 yuan/kg without considering the cost of organic certification, which was much higher than that of conventional rice. However, the pesticides and chemical fertilizers in the “rice-duck farming” system were abandoned, so the soil and air environment were improved, and there were no pesticide residues in the rice which could be very easy certified as an organic production,  the net income was 76 000 yuan/hm2 which was much higher than that of ordinary rice cultivation (27 595 yuan/hm2).

Key words: rice-duck farming, pesticide, yield, ecological benefit, economic benefit